All posts in Tank Mixing

The new 17,000 m3 Digester 6 at Changi Water Reclamation Plant will be mixed using a custom Rotamix pump and nozzle mixing system. With a diameter of 32 metres across, a sidewall height of 13.9 metres and a cone depth of 18.3 metres, Engineers working on the Digester 6 project at Changi WRP were presented with some unique challenges. One major consideration was selecting a sludge mixing system that would...

Fairfield-Suisun Sewer District (FSSD) in California installed a Vaughan Rotamix® hydraulic mixing system next to an identical anaerobic digester with a 7-year-old gas mixing system. Rotamix® installation was completed in Sept, 2010. This opportunity allowed the District to directly compare Rotamix vs. gas mixing in their very well instrumented digesters, which handle predominantly primary and thickened waste activated sludge. The digesters are identical 95 ft (29m) dia, 1.76 million gallons...

Vaughan Rotamix will solve many of the traditional problems associated with mixing storage/ sludge lagoons at local authority and industrial wastewater treatment plants as no moving parts are installed in the lagoon. Submersible mixers and floating shaft driven mixers have electric cables and moving parts in the wastewater, which can be prone to problems of fine fibres and rags reweaving and wrapping around moving parts, shafts and cables. If an...